package com.alongthink.javademo.globalcatch;

import com.alongthink.javademo.globalClass.ResultBody;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {
    /**
     * 处理自定义的业务异常
     * @param req
     * @param e
     * @return
     */
    @ExceptionHandler(value = AlongException.class)
    @ResponseBody
    public ResultBody alongExceptionHandler(HttpServletRequest req, AlongException e){
        log.error("发生业务异常！原因是：{}",e.getErrorMsg());
        return ResultBody.error(e.getErrorCode(),e.getErrorMsg());
    }

    /**
     * 处理空指针的异常
     * @param req
     * @param e
     * @return
     */
    @ExceptionHandler(value =NullPointerException.class)
    @ResponseBody
    public ResultBody exceptionHandler(HttpServletRequest req, NullPointerException e){
        log.error("发生空指针异常！原因是:",e);
        return ResultBody.error(BaseReturnEnum.BODY_NOT_MATCH);
    }


    /**
     * 处理其他异常
     * @param req
     * @param e
     * @return
     */
    @ExceptionHandler(value =Exception.class)
    @ResponseBody
    public ResultBody exceptionHandler(HttpServletRequest req, Exception e){
        log.error("未知异常！原因是:",e);
        return ResultBody.error("500","服务器内部错误，"+e.getMessage());
    }
}
